Re: RFR: 8214761: Bug in parallel Kahan summation implementation [v2]
On Wed, 21 Jul 2021 20:19:31 GMT, Ian Graves wrote: >> 8214761: Bug in parallel Kahan summation implementation > > Ian Graves has updated the pull request incrementally with three additional > commits since the last revision: > > - Updates with more test coverage > - stashing > - Stashing The code changes look fine, but IMO the comments should be re-worded a bit. Rather text like // Negating this value because low-order bits are in negated form I suggest something like // Subtract compensation bits The main compensation loop also subtracts the compensation bits. A comment like "subtract compensation bits" makes the corrected handling of them seem less anomalous. - Marked as reviewed by darcy (Reviewer). PR: https://git.openjdk.java.net/jdk/pull/4674
Re: RFR: 8214761: Bug in parallel Kahan summation implementation [v2]
On Wed, 21 Jul 2021 20:19:31 GMT, Ian Graves wrote: >> 8214761: Bug in parallel Kahan summation implementation > > Ian Graves has updated the pull request incrementally with three additional > commits since the last revision: > > - Updates with more test coverage > - stashing > - Stashing Circling back on this. I've worked in the test from Ivan Gerasimov's email back when. It includes some additional comparisons to prior approaches to assert improvements in error. - PR: https://git.openjdk.java.net/jdk/pull/4674
Re: RFR: 8214761: Bug in parallel Kahan summation implementation [v2]
> 8214761: Bug in parallel Kahan summation implementation Ian Graves has updated the pull request incrementally with three additional commits since the last revision: - Updates with more test coverage - stashing - Stashing - Changes: - all: https://git.openjdk.java.net/jdk/pull/4674/files - new: https://git.openjdk.java.net/jdk/pull/4674/files/d7fc3948..10b8dcda Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=4674=01 - incr: https://webrevs.openjdk.java.net/?repo=jdk=4674=00-01 Stats: 216 lines in 4 files changed: 213 ins; 0 del; 3 mod Patch: https://git.openjdk.java.net/jdk/pull/4674.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4674/head:pull/4674 PR: https://git.openjdk.java.net/jdk/pull/4674
